*is
been, *am been, *are been,*was been, *were been,*has been been, *have been been,*had been
been, *can be been,*want to be been, *used to be been

impossible:

*is appeared,
*are seemed,*were become, *was looked, etc.

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Here are a few examples of
other intransitiveverbs.They cannot be used in passive:

impossible:

*is
rained, *are happened,*was went, *were listened,*has been lived, *have been stayed,*had been
belonged, *can be slept,*to be arisen, *to have been slept

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Special Notes:

1.

A few verbs (including the
sensory verbs) haveboth transitive
and intransitive meanings. For suchverbs, the
transitivemeaning
can be passive, butthe intransitive meaning cannot:

Someone smelled the flower.
(transitive) --->The flower was smelled.

The flower smelled sweet.
(intransitive) --->no passive.

Someone tasted the food. (transitive)
--->The food was tasted..

The food tasted delicious.
(intransitive) --->no passive.

2.

Remember:Only transitive verbs can havepassive forms.Sometimes you may not be sureif a verb
istransitive or intransitive. When thishappens,check the verb in a dictionary. Mostdictionaries will have vt
(transitive verb) orvi (intransitive verb) to show this information.